Recording-compass.



PATENTED JULYZl, 1903.

B. HEDBNSTROM. RECORDING COMPASS.

APPLIQATION FILED PBB.16. 190s.

TIIIIIIIIIIIIIIIIIIIIII NO MODEL.

Frzwsifiawzsirwzz M Attorneys Witnesses: i l I J UNITED STATES Patented .l'uly 21, 1903.

PATENT OEEIcE.

ERNEST HEDENSTROM, OF VANCOUVER, CANADA, ASSIGNOR TO H. E.

' HALL, OF LIBBY, MONTANA.

RECORDING-COMPASS.-

SPEGIFIGATION forming part of Letters Patent No. 734,064, dated July 21, 1903.

Application filed February 16, 1903. Serial No. 148,735. No modeLl To [tZZ ZU7'L0777/ it 11mg concern:

Be it known that I, ERNEST HEDENSTROM, a citizen of the Dominion of Canada, residing at the city of Vancouver, in the Province of British Columbia, in the Dominion of Oanad a, have invented certain new and useful Improvements in Compasses; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

My invention. relates to recording instruments adapted particularly for use by travelare and others to record the path passed over by them in their journey from one place to another over unknown roads, whereby they are enabled at all times to locate themselves, Whatever be the nature of the country or territory passed over, and where desired to retrace their way readily to the starting-point, this instrument being of that type which forms a permanent graphic record on a sheet of paper or like material. The instrument, moreover, while intended specially for travelers on prairies or other wide expanses of country where landmarks are absent will obviously be equally useful on the water in navigation of all kinds, both for small and large vessels, and in similar situations.

In its general construction the invention comprises a recording-needle, which travels across the dial of a compass, its direction of movement across the dial dependingupon th position of the magnetic needle.

The instrument is intended to be carried so that its dial bears a fixed relation to the direction of the travelers movement. In other words, it would be securely fastened in a substantially horizontal position upon a persons body with a belt orsimilar means or it would be secured in the same position to the body of a vehicle.

More specifically, the invention consists in the construction and combination of parts to be more fully described hereinafter and definitely set forth in the claims.

In the drawings, Figure 1 is a plan of the instrument with its cover removed. Fig. 2 is a vertical cross-section through the same. Fig. 3 is a vertical cross-section through the needle.

Throughout the drawings and specification the same numerals refer to like parts.

Referring more particularly to the parts, 1 represents a case of common form, as indicated, provided with a suitable removable cover 2, comprising a convex glass plate or crystal 3: Upon the lower face of this crystal 3 and centrally thereof there is mounted a bracket or hanger 4, which may be attached by cement or similar means. Upon the lower side of this hanger a magnetic needle 5 is pivoted, as indicated at 6, the north pole of the needle being distinguished by the arrow 7. There is also provided a substantially horizontal transverse auxiliary bottom 8, provided with a central opening 9, and lying upon this bottom 8 there is provided a dial 10, upon which the points of the compass are indicated. This dial is also provided with an opening 11, which is central and concentric with the aforesaid opening 9.

The needle 5 is provided upon its lower side with a longitudinal channel or groove 12, in which is guided an elongated penholder 13, the same being provided near its outer extremity with a shoulder, as indicated at 14in Fig. 3, which projects up into the aforesaid channel 12. At this point the penholder is folded, as indicated at 15, so as to receive the edges of the needle 5. The edges of the needle are clasped by the penholder in a similar manner at 16. At this outer extremity this penholder is formed into a downwardly-projecting tip or point 20, which lies upon the face of the aforesaid dial 10. An in k-tube 17 is supported in a substantially horizontal position from the lower side of the penholder by means of the small spring-clasps 18, as most clearly shown in Fig. 3. Its body consists, preferably, of a thin glass tube, and this terminates in a downwardly-inclined point 19, which lies just behind the aforesaid pen or point 20. This ink-tube is expected to be taken out, filled with ink, and corked at its inner extremity with a suitable stopper 21.

Within the case 1, but below the auxiliary bottom 8, mechanism is located for advancing the penholder and pen along the needle 5. This comprises some simple form of spring and escapement mechanism mounted within the little case 22, a suitable key 23 being proism could operate to advancethe same slowly along the needle toward the position which it occupies in Fig. 2, and if the pen 20 were sup-' plied with ink a line could be made upon the face of the dial, as will be readily understood, and it should further appear that as long as the travelers direction did not change this line would be substantially unchanging in direction. This is evident, because there will have been no substantial relative movement between the needle and the dial. The tracing of this line would of course begin at or near the center of the dial, and it should appear that if the traveler did not move in substantially the same direction the line traced by the pen will be more or less irregular in character and of some such form as that indicated by the line 30. In order to permit the pen 20 to be returned to its starting-point, I provide means for disengagingi the pinwheel 26 from the gear 25. For this purpose I-provide a lever 31, pivoted at 32, the inner extremity of which is preferably bent, substantially as shown, and provided with a foot 33, which may be pressed against the outer head 34 of the aforesaid bobbin 27. The outer extremity of this lever lies in a slot 35 in the wall of the case, which slot is provided with two notches 36, which correspond, respectively, to the engaged and disengaged positions for the mechanism.

It the needle, pen, and its operating mechanism cooperated with a compass-dial of the ordinary form, the result would be that where the traveler progressed in a general northeasterly direction the line would be traced in a general northwesterly direction. To correct this inversion, the east and west points of the compass are reversed upon my dial, so that the pen records the true condition of affairs. This inversion, it will be seen, must occur in using an ordinary dial, from the fact that when the dial is turned toward the east the needle will relatively move west upon the dial.

In order to enable this instrument to be used'at night, I cover the face of the dial with phosphorus. The dial will of course be always cleaned preparatory to each trip with the instrument.

It should be observed that supporting the magnetic needle from the glass, as I do, permits perfect freedom in the movement of the penholder and cord below the same.

res; ea

In operating the instrument its cover2 can be at any time removed for refilling the pentube, cleaning the dial, resetting the pen, &c.

While I have shown inthe accompanying drawings the preferred form of my invention, it will be understood that I do not limit myself to the precise form shown, for many of the details may be changed in form or position without alfecting the operativeness or utility of my invention, and I therefore reserve the right to make alisuch modifications as are included within the scope of the following claims or of mechanical equivalents to the structures set forth.

Having thus described my invention, what I claim as new, and desirezto secure by Letters Patent, is E 1. In combination, adiaharecording device cooperating therewith, means for advancing said recordingdevice, a magnetic needle, and means whereby the direction of said magnetic needle may control the direction of advance of said recording device.;

2. In a compass, in combination, a magnetic needle, a recording device longitudinally guided thereupon, a dial with which the recording device may cooperate to trace a line thereupon, and means for advancing said recording device. 7

3. In a compass, in combination, a freelypivoted magnetic needle, a recording device carried thereby, a dial having the points of the compass marked thereon and cooperating with said recording device, mechanism for advancing said recordingdevice, and means for disconnecting the same.

4. In a device of the class described, in combination, a cover, a magnetic needle freely pivoted upon the lower face thereof, a recording device longitudinally guided upon said needle, a dial with which said recording device cooperates, and means for advancing said recording device.

5. In a device of the class described, in combin ation, a case, a glass cover therefor, a magnetic needle pivotally supported from the lower side of said glass cover, a dial therebelow and having the points of compass marked thereupon, a recording device guided upon the lower side of said needle and cooperating with said dial, and means for advancing said recording device.

6. In a device of the class described, in combination, a fixed dial, a magnetic needle, a recording device carried by said needle and adapted to trace a line upc-n said dial, the corresponding east and west points being re versed with respect to a true compass-dial.

7. In a device of the class described, in combination, a magnetic needle, a dial, a recording device carried by said needle and cooperating with said dial, a rotatable member, a second rotatable member engaging therewith, a resilient member adapted to press said rotatable members into engagement, said rotatable members being adapted to advance said recording device, and means for pressing said resilient members so as to disengage said rotatable members.

8. In a device of the class described, in combination, a magnetic needle, a dial therebelow, a recording device carried by said needle and cooperating with said dial,a bobbin therebelow, a cord wrapped upon said bobbin and attached to said recording, device, means for continuously rotating said bobbin, a resilient support for said bobbin, andra lever adapted to deflect said resilient support and disengage said bobbin.

9. In a device of the class described, in combination, a cover, a magnetic needle pivotally supported therefrom, a recording device guided upon said needle, a dial cooperating 'therewith, said dial having a central opening therethrough, a cord passing through said opening and attached to said recording de vice whereby the same may be advanced, and means for drawing said cord.

10. In a device of the class described, in

nel upon the lower side thereof, a penholder guided therein, a pen carried thereby, a tubular member carried below said penholder adapted to deliver a writing fluid into said pen, and means for advancing said penholder along the lower side of said needle.

11. In a device of the class described, in combination, a magnetic needle, a recording device carried thereby, a dial cooperating therewith, spring-escapement mechanism below said dial, means whereby the same may advance said recording device, and a lever adapted to disconnect said mechanism.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

ERNEST HEDENSTROM.

Witnesses:

THos. J. ROBERTS, CHAS. OVER. 

